Reply To: Allow back-orders does not update swatches

Hello,

The use of the functions.php file and Smart Manager is considered custom development and out of theme support policy. I recommend making these changes directly from the WooCommerce product edit page.

You can check this PHP function or smart manager working with default WordPress themes like TwentyTwenty or WooCommerce Storefront to understand is it our theme issue or not?

Best Regards.